use some unstable pkgs, reorganize hw

modules/hardware/amd.nix

@@ -0,0 +1,47 @@
+{
+  lib,
+  config,
+  pkgs,
+  ...
+}: let
+  cfg = config.my.hardware.amd;
+in {
+  options.my.hardware.amd = {
+    cpu = lib.mkEnableOption "amd cpu";
+    gpu = lib.mkEnableOption "amd gpu";
+    radeon = lib.mkEnableOption "amd legacy gpu"; # old hardware, dont judge
+  };
+
+  config = lib.mkMerge [
+    (lib.mkIf cfg.cpu {
+      boot.kernelModules = ["kvm-amd"];
+      hardware.cpu.amd.updateMicrocode = true;
+    })
+
+    (lib.mkIf cfg.gpu {
+      boot.kernelModules = ["amdgpu"];
+      services.xserver.videoDrivers = ["amdgpu"];
+
+      hardware.opengl = {
+        extraPackages = with pkgs; [
+          amdvlk
+        ];
+        extraPackages32 = with pkgs; [
+          driversi686Linux.amdvlk
+        ];
+      };
+
+      environment.systemPackages = with pkgs; [
+        unstable.nvtop-amd
+      ];
+    })
+
+    (lib.mkIf cfg.radeon {
+      boot.kernelModules = ["radeon"];
+      services.xserver.videoDrivers = ["radeon"];
+      environment.systemPackages = with pkgs; [
+        radeontop
+      ];
+    })
+  ];
+}